Reactor for preparing succinyl oxide by hydrogenation of maleic anhydride

A reactor for preparing succinyl oxide by hydrogenation of maleic anhydride is characterized by utilizing a trickle bed catalytic reactor which is provided with a tower body, a detachable seal head, a hydrogen inlet, a catalyst charging opening, a distributor, a maleic anhydride/solvent inlet, a distributing board, a catalyst material layer, a catalyst discharging opening and a product outlet, wherein the detachable seal head is arranged on the tower body, the hydrogen inlet and the catalyst charging opening are located on the seal head, the distributor is located on the upper portion of the tower body, the maleic anhydride/solvent inlet is located on the upper portion of the distributor, the distributing board is located on the lower portion of the tower body, the catalyst material layer which is formed by hydrogenation catalyst is disposed on the distributing board, and the catalyst discharging opening and the product outlet are arranged on the lower portion of the tower body. The distributor is bubble-cap-